Finding the Fourth Proportional to 519,145.13, 716,420.28 and 280,681.13
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Solution
The fourth proportional to 519,145.13, 716,420.28 and 280,681.13 is: 387,339.96
Step by Step Solution
- Step 1: Write the proportion equation
519,145.13 : 716,420.28 = 280,681.13 : x - Step 2: Convert to fraction form
519,145.13/716,420.28 = 280,681.13/x - Step 3: Cross multiply
519,145.13x = 716,420.28 × 280,681.13 - Step 4: Simplify right side
519,145.13x = 201,085,650,163.22 - Step 5: Solve for x
x = 201,085,650,163.22/519,145.13 - Step 6: Final answer
x = 387,339.96
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.